Mechanism for reclaiming defective locomotive and steam cylinders.



E. J. BREWSTER 4&1. MURRIN.

MECHANISM FOR RECLAIMING DEFECTIVE LOCOMOTIVE AND STEAM CYLINDERS.

APPLICATION FILED APR.23,1915.

1 209,]. 12. Patented Dec. 19,1916. I

2 SHEETS-SHEET 1.

1 w ail l flue/7M E. J. BREWSTER & J. MURRIN.

MECHANISM FOR RHELAIMING DEFECTIVE LOCOMOTIVE AND STEAM CYLINDERS.

APPLICATION FILED APR.Z3, 1915.

r v 5, J 5 m Q fir Q Q ELMER J. BREWSTER AND JOHN MURRIN, OF CHICAGO, ILLINOIS.

MECHANISM FOR RECLAIMING DEFECTIVE LOGOMOTIVE AND STEAM QYLINDERS/ To all whom it may concern:

Be it known that we, ELMEB J. BREW- s'rnn, residing at Chicago, in the county of Cook and State of Illinois, and J OHN MUR- BIN, residing at Chicago, in the same county and State, both citizens of the United' tives Well knows, the steam cylinders and valve Cylinders supplying steam thereto are ordinarily contained in very heavy, cumbersome and expensive castings which if broken are practically non-weldable, and

that steam is supplied to the cylinder properthrough the valve cylinder or other device in a passageway formed in the casting itself which causes unequal expansion and contraction of the metal of the casting with the details which will be hereafter more fully.

result that in the past quite a largeper centage of devices of this kind werebroken in or through the steam supply pipebecause of this unequal expansion. The result of these facts has heretofore been that it was necessary to throw awaythe entire casting long before the cylinder device was worn out and as this meant the throwing away of $500, 5. 0., the value of such castings, it has been a very serious matter with railroads and [other concerns using locomotives and other engines having cast cylinders of this class.

The object of this invention is to provide means for repairing these cast cylinders when they do break in thesteam supply pi e and thus render them usable through t e remainder of their normal lives without decreasing the efiiciency of the device.

The invention consists more particularly in mechanism for so repairing locomotive cylinders.

It further consists in the features and described in the specification and claimed.

Referring to the drawings in which similar numerals indicate the same parts throughout the several views, Figure 1 is a side view one-half in central section of a locomotive steam cylinder and its valvecylinder. Fig. 2 is a sectional end view looking at the parts as shown in Fig. from the right. Fig. 3 is a side view partlally 1n Specification of Letters Patent. I Patented De 19 1916.

' Application filed Apri123, 1915. Serial No. 23,313.

section of a supplementary cylinder lining applied to the valve cylinder carrying out this invention. Fig. 4 is a side view of a supplemental or saddle casting applied to the valve cylinderin carrying out this invention. Fig. 5 is a bottom view of the casting shown in Fig. 4.

The device is, of course, applicable to any type of engine cylinder single, compound or triple expansion and to any form of engine whether it is a railroad locomotive or not.

Simply for purposes of illustration, the device is shown applied to the single cylinder 10 of a locomotive controlled by a valve cylinder 12, the two being contained within a large general casting 14 which itself contains the steam passageway 16 leading from the locomotive boiler 18 to'the valve cylinder 12. As in all locomotives of this type, a valve piston device forming no part of this invention and therefore not shown, is movable Within the valve cylinder 12' to control admission of steam from the passage 16 throughports 20 and passageway 22 into the main engine cylinder 10, in which the power piston reciprocates in the ordinary manner.

-The problem solved by this invention is to repair this general casting and the parts thus far described contained therein when a break occurs due to unequal expansion and contraction. of the metal in the passageway I 16 so that sald passageway no longer will conduct steam from the locomotive boiler to valve cylinder 12. When such a break occurs in passageway 16 an openlng is made in the top of the valve cylinder of such size as to receive the saddle casting 22 which is provided with a central steam passageway 24'ending in a flange 26 and provided on its sides with flanged members 28 and 30 adapted to fit over and generally conform to the exterior configuration of the casting 14. Through the flanges just described are suitable holes 32, 34: for the studs to secure this, saddle casting inv place in the general position just shown in Fig. 2. All this can be done without removing the cylinder from the engine. I A v The central body portion ofsa'ddle casting 22 is made initially of greater depth than the thickness of the walls of cylinder 12 so that when the saddle casting is first placed in position it extends substantially C i into the cylinder 12. I .No attempt is made to make the saddle casting as thus far described engage the main casting 14 in a steam tight fit. In other words, it is ap plied in loose fit and rigidly secured in position. When the saddle casting has been thus applied the cylinder 12 is rebored sufiiciently so that itwill take the supplemental cylinder or sleeve 36, shown in Fig. 3, whose internal diameter is that of the original valve cylinder. In thus boring out the valve cylinder 12 the lower portion of the saddle casting 22 is, of course, cut away as shown in Fig. 2. When this operation has been completed the supplemental cylinder 36 is put in place with its previously prepared steam port 38 registering with passageway 24 in the saddle casting 22 and its ports 40 registering with the ports 20 heretofore referred to. As the central body portion of this cylinder 36 is otherwise unperforated, it effectively closes passageway 16 through which the steam originally entered the valve cylinder and thus transfers the steam supply port from passageway 16 to passageway 24.

The passageway 16 is now preferably filled with asbestos not shown in the drawings and the plate 42 secured over the end of the passageway 16 by any suitable means as for instance the screws 44.

When the casting 14 has been thus repaired,any suitable pipe device as 46 is attached to the saddle casting and connected to the boiler 18 and secured in place by any suitable means as for instance bolts passing through suitable holes 48 in the flange 26 and the saddle casting and flange 50 on the pipe 46. The valve mechanism not shown is then replaced in the cylinder 36-12 and the device is ready for operation just as though no break had occurred in pipe 16.

Many changes may be made in details of applying the various parts named to the valve cylinder and in the formof the valve cylinder to which the parts are applied without departing from this invention, as set forth in the claims.

While the device has been shown as applied to an engine having a cylindrical valve chamber, it may obviously be applied to engines having other shapes of valve devices without departing from this invention.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent, is:

1. In an engine, the combination of a casting including a valve cylinder and having a passage therein leading to the cylinder, a saddle casting having a passage there through inserted in an opening in the cylinder remote from the passage leading to the cylinder, means for securing said saddle casting to the cylinder, and a cylindrical lining inserted in the cylinder to close the first named passage and forming a steam tight joint between same and the cylinder and between same and the saddle casting, said lining having an opening therein registering with the passage in the saddle casting.

2. In an engine, the combination of a valve cylinder, a saddle casting having a passage therethrough inserted in an opening in the cylinder, means for securing said saddle casting in position to the cylinder, and a cylindrical lining inserted in the cylinder and having an opening therein registering with ,the passage in the saddle casting, said lining forming a steam tight joint between same and the cylinder and between same and the saddle casting.

In witness whereof, we have hereunto subscribed our names in the presence of two witnesses.

ELMER J. BREWSTER. JOHN MURRIN. Witnesses:

WILLIAM H. WAFER, FRANCIs M. SYMMES. 

